DROMEC Winches builds ingenious renewable for Kitepower

Kitepower, a Delft-based start-up, has developed a revolutionary system for an energy kite. This experiment by astronaut Wubbo Ockels was a dream and became a reality with the vision of Kitepower and is now fully operational in Ireland. DROMEC Winches made a significant contribution to the development of the system by designing and building the winches in the ground stations.

Electric winch system

With a winch specially developed by DROMEC Winches, electricity is generated by unrolling a cable connected to the circling kite. The pulling force of the kite is converted into electricity by the electric winch. With the help of a control system, the kite can automatically take off and land. A sustainable and efficient system. The winches from DROMEC Winches in the ground stations control the kite in a constant cycle up and down.

Kite cycle

In the cycle, the kite generates electricity for 96 seconds, after which it consumes electricity for 24 seconds. The system is powered by a winch system where braking provides energy to the grid. This electric drive has an asynchronous motor with a gearbox. It is equipped with a full-safe brake so that the motor can be switched off in case of an emergency. What’s special about the system are the ultracaps, which compensate for the cycle, ensuring continuous power delivery.

The kite can fly out to 200 to 300 meters with high power and low speed in a cycle of about 2 minutes and a total wire length of 450 meters. Then it is depowered and retracted at low power and high speed. With a start at altitude, the kite always has good wind capture.

Geerart de Vree, CTO Engineering:
‘We are working on a third 100kWh system for Kitepower to further innovate the principle so that we can scale up. With the upcoming projects, we aim to achieve even more flight hours and thus contribute to a sustainable world. Additionally, a new 30kWh system is in the works, which can be flexibly deployed in various locations. We have a great collaboration with Kitepower. It is at the cutting edge of what is possible and feasible. It is a skilled team, and the product is industrial-worthy, even in collaboration with aviation authorities.’


DROMEC Winches provides the control of the winch system. This must work in tandem with the kite control. With this control, the winch system can release energy at a speed of 3 meters per second as energy production speed. The retrieval speed is even around 11 meters per second. Sometimes, the system generates a peak of 200kW at very high wind speeds. With Kitepower, a stable way of generating energy is achieved because they can adjust the kite control to the wind speed and the width of the cycle.

Ahead of the wind

Kitepower is a pioneer leading in the top ten of the best kiters in the world. They are literally ‘ahead of the wind’. Energy kites can also be used as temporary energy sources, for example, in the event of natural disasters. This not only makes it sustainable but also serves a social purpose. Thus, together with Kitepower, DROMEC Winches contributes to a green future!

Read more about this system: https://thekitepower.com/the-hawk/

Hydraulic tugger winches for Herman SR. BV

Recently Dromec supplied two hydraulic tugger winches of type HPV-12000 to company Herman SR. BV.

Herman SR. BV supplies workboats including crew for all kind of maritime projects. Both  HPV-12000 (12 mT on layer 1) as the 15 mT variant, HPV-15000 are available from stock.

The winches are characterized by a solid and compact design and cable capacity of 104 mtr. In 5 layers. Winches are equipped with a disc braken and brake valve and plug and play to use.

As surface treatment, a 3-layer offshore coating RAL9005  is applied. Nice to see that also Dromec’s  cable spooling machine type DPW-750 is in use!

Dromec wishes Herman SR. BV many safe and pleasant jobs.

DROMEC winches. Your movement in good hands.

Dynamic and Innovative in winches, winchsystems, controls and software. With our enthousiastic team, we develop  from small till  very big & complex systems with the highest demands in terms of safety and ease of use. We also work very closely with certified body’s as DNVGL, BV, ABS, Lloyds so your winches and systems can be completely certified at our own company together with you.

It often starts with a good idea, preferably on a piece of scrap paper. After an initial consultation, we prepare one or more proposals, including a target price and preliminary drawing. Your idea or problem, always remains central in this. If the feeling on both sides is good, we start. Thanks to our own inhouse developed and written project software, your project stays in the picture and under control from start to finish, including the planning and delivery time. We are LloydsRegister ISO 9001 certified.